<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>表格隔行变色</title>
  <style>
    table {
      width: 800px;
      margin: 100px auto;
      text-align: center;
      border-collapse: collapse;
      font-size: 14px;
    }

    thead tr {
      height: 30px;
      background-color: skyblue;
    }

    tbody tr {
      height: 30px;
    }

    tbody td {
      border-bottom: 1px solid #d7d7d7;
      font-size: 12px;
      color: blue;
    }

    .bg {
      background-color: pink;
    }
  </style>
</head>
<body>
  <table>
    <thead>
    <tr>
      <th>代码</th>
      <th>名称</th>
      <th>最新公布净值</th>
      <th>累计净值</th>
      <th>前单位净值</th>
      <th>净值增长率</th>
    </tr>
    </thead>
    <tbody>
    <tr>
      <td>003526</td>
      <td>农银金穗3个月定期开放债券</td>
      <td>1.075</td>
      <td>1.079</td>
      <td>1.074</td>
      <td>+0.047%</td>
    </tr>
    <tr>
      <td>003526</td>
      <td>农银金穗3个月定期开放债券</td>
      <td>1.075</td>
      <td>1.079</td>
      <td>1.074</td>
      <td>+0.047%</td>
    </tr>
    <tr>
      <td>003526</td>
      <td>农银金穗3个月定期开放债券</td>
      <td>1.075</td>
      <td>1.079</td>
      <td>1.074</td>
      <td>+0.047%</td>
    </tr>
    <tr>
      <td>003526</td>
      <td>农银金穗3个月定期开放债券</td>
      <td>1.075</td>
      <td>1.079</td>
      <td>1.074</td>
      <td>+0.047%</td>
    </tr>
    <tr>
      <td>003526</td>
      <td>农银金穗3个月定期开放债券</td>
      <td>1.075</td>
      <td>1.079</td>
      <td>1.074</td>
      <td>+0.047%</td>
    </tr>
    <tr>
      <td>003526</td>
      <td>农银金穗3个月定期开放债券</td>
      <td>1.075</td>
      <td>1.079</td>
      <td>1.074</td>
      <td>+0.047%</td>
    </tr>
    </tbody>
  </table>
  <script>
    // 1.获取元素 获取的是 tbody 里面所有的行
    var trs = document.querySelector('tbody').querySelectorAll('tr')
    // 2. 利用循环绑定注册事件
    for (var i = 0; i < trs.length; i++) {
      // 3. 鼠标经过事件 onmouseover
      trs[i].onmouseover = function () {
        // console.log(11);
        this.className = 'bg'
        this.style.cursor = 'pointer'
      }
      // 4. 鼠标离开事件 onmouseout
      trs[i].onmouseout = function () {
        this.className = ''
      }
    }
  </script>
</body>
</html>